Rambau, Khavharendwe MAMusyoka, Nicholas MManyala, NRen, JianweiLangmi, Henrietta WMathe, Mahlanyane K2019-02-042019-02-042018-05Rambau, K.M.A. et al. 2018. Preparation of carbon nanofibers/tubes using waste tyres pyrolysis oil and coal fly ash derived catalyst. Journal of Environmental Science and Health, Part A, vol. 53(12): 1115-11221093-45291532-4117https://www.tandfonline.com/doi/abs/10.1080/10934529.2018.1474594https://doi.org/10.1080/10934529.2018.1474594https://www.tandfonline.com/doi/full/10.1080/10934529.2018.1474594http://hdl.handle.net/10204/10673Copyright: 2018 Taylor & Francis. Due to copyright restrictions, the attached PDF file only contains the preprint version of the published item. For access to the published item, please consult the publisher's website. The definitive version can be obtained from https://www.tandfonline.com/doi/abs/10.1080/10934529.2018.1474594In this study, two waste materials namely; coal y ash (CFA) and waste tyres pyrolysis oil, were successfully utilized in the synthesis of carbon nanofibers/tubes (CNF/Ts). In addition, Fe-rich CFA magnetic fraction (Mag-CFA) and ethylene gas were also used for comparison purposes. The carbons obtained from CFA were found to be anchored on the surface of the cenosphere and consisted of both CNTs and CNFs, whereas those obtained from Mag-CFA consisted of only multi-walled carbon nanotubes (MWCNTs). The study further showed that the type of carbon precursor and support material played an important role in determining the nanocarbon growth mechanism. The findings from this research have demonstrated that it is possible to utilize waste tyres pyrolysis oil vapor as a substitute for some expensive commercial carbonaceous gases.enCarbon nanofibers/tubesCNF/TsMulti-walled carbon nanotubeMWCNTWaste tyresPyrolysis oil vaporYarnTiresPyrolysisFly ashSupport materialsGrowth mechanismsEthylene gasCenospheresCarbon precursorsArticleRambau, K. M., Musyoka, N. M., Manyala, N., Ren, J., Langmi, H. W., & Mathe, M. K. (2018). Preparation of carbon nanofibers/tubes using waste tyres pyrolysis oil and coal fly ash derived catalyst. http://hdl.handle.net/10204/10673Rambau, Khavharendwe MA, Nicholas M Musyoka, N Manyala, Jianwei Ren, Henrietta W Langmi, and Mahlanyane K Mathe "Preparation of carbon nanofibers/tubes using waste tyres pyrolysis oil and coal fly ash derived catalyst." (2018) http://hdl.handle.net/10204/10673Rambau KM, Musyoka NM, Manyala N, Ren J, Langmi HW, Mathe MK. Preparation of carbon nanofibers/tubes using waste tyres pyrolysis oil and coal fly ash derived catalyst. 2018; http://hdl.handle.net/10204/10673.TY - Article AU - Rambau, Khavharendwe MA AU - Musyoka, Nicholas M AU - Manyala, N AU - Ren, Jianwei AU - Langmi, Henrietta W AU - Mathe, Mahlanyane K AB - In this study, two waste materials namely; coal y ash (CFA) and waste tyres pyrolysis oil, were successfully utilized in the synthesis of carbon nanofibers/tubes (CNF/Ts). In addition, Fe-rich CFA magnetic fraction (Mag-CFA) and ethylene gas were also used for comparison purposes. The carbons obtained from CFA were found to be anchored on the surface of the cenosphere and consisted of both CNTs and CNFs, whereas those obtained from Mag-CFA consisted of only multi-walled carbon nanotubes (MWCNTs). The study further showed that the type of carbon precursor and support material played an important role in determining the nanocarbon growth mechanism. The findings from this research have demonstrated that it is possible to utilize waste tyres pyrolysis oil vapor as a substitute for some expensive commercial carbonaceous gases. DA - 2018-05 DB - ResearchSpace DP - CSIR KW - Carbon nanofibers/tubes KW - CNF/Ts KW - Multi-walled carbon nanotube KW - MWCNT KW - Waste tyres KW - Pyrolysis oil vapor KW - Yarn KW - Tires KW - Pyrolysis KW - Fly ash KW - Support materials KW - Growth mechanisms KW - Ethylene gas KW - Cenospheres KW - Carbon precursors LK - https://researchspace.csir.co.za PY - 2018 SM - 1093-4529 SM - 1532-4117 T1 - Preparation of carbon nanofibers/tubes using waste tyres pyrolysis oil and coal fly ash derived catalyst TI - Preparation of carbon nanofibers/tubes using waste tyres pyrolysis oil and coal fly ash derived catalyst UR - http://hdl.handle.net/10204/10673 ER -